Re: GetWindowRect - C / C++ / MFC Discussion Boards

baerten19-May-08 23:53

19-May-08 23:53

Hi everybody,

i place a Grid into a position of (-10,0,200,100) into my view.
So there are missing 10 pixels of the grid, which i wanted.

My question is: Why i get a rectangle of (0,0,190,100) if i make a
Grid->GetClientRect(rect); ?

It's normally correct that the rectangle starts always in a client-position in 0,0
But how i can retrieve where my grid is really positionated on the view?
I want to get the value of (-10,0,200,100), like i used it in the Grid->Create(...);

Big thanks for help Smile | :)

Re: GetWindowRect

Rajesh R Subramanian20-May-08 0:00

Rajesh R Subramanian

20-May-08 0:00

baerten wrote:
My question is: Why i get a rectangle of (0,0,190,100) if i make a
Grid->GetClientRect(rect); ?

By drawing something at (-10,0,200,100), you should have produced a result like this:

  <font color="blue">|</font>          <font color="blue">    |</font>
--<font color="blue">|</font>----------<font color="blue">    |</font>
--<font color="blue">|</font>----------<font color="blue">    |</font>
--<font color="blue">|</font>----------<font color="blue">    |</font>
--<font color="blue">|</font>----------<font color="blue">    |</font>
--<font color="blue">|</font>----------<font color="blue">    |</font>

The blue line is the virtual boundary and what is drawn outside the boundary, is gone invisible. Why don't you begin your drawing at 0,0 instead of -10, 0 ? Is there a specific reason to it?

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

CPallini20-May-08 0:04

CPallini

20-May-08 0:04

Skilled in figurative arts?
Big Grin | :-D

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

Re: OT

Rajesh R Subramanian20-May-08 0:09

Rajesh R Subramanian

20-May-08 0:09

Been drinking an espresso americano. Probably that had something to do with it. Rich, smooth and warm. Ah - Caffeine in my blood. Big Grin | :-D

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: OT

CPallini20-May-08 0:16

CPallini

20-May-08 0:16

Rajesh R Subramanian wrote:
Caffeine

Oh, I like soo much!

BTW

Rajesh R Subramanian wrote:
espresso americano

I know espresso (i.e. Italian Wink | ;)

) coffee, and American coffee (i.e. espresso watered down Poke tongue | ;-P

).
What is espresso americano?

Smile | :)

Re: OT

Rajesh R Subramanian20-May-08 0:24

Rajesh R Subramanian

20-May-08 0:24

You're a lucky guy sitting at Italy. You must be drinking the best espresso coffees. Smile | :)

CPallini wrote:
What is espresso americano?

I'm not a coffee expert (I drink lots of tea). To me, it is just another black coffee. But I always like italiano (in black coffee) or cappuccino better for reasons unknown. I've also liked frappe + chocolate sauce topped up with freshly whipped cream (when it comes to cold coffee).

I think we're *this* close to hijack this thread and convert it to a food thread completely. OMG | :OMG:

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: GetWindowRect

baerten20-May-08 0:16

baerten

20-May-08 0:16

big thanks for your answer. Big Grin | :-D

Yes it has really a reason Smile | :)

This way i hide a vertical at the left side of the Grid.
So the grid is smaller and fit's better to the layout.

Ok, as i understand i can't get the initial value because during the draw it's "deleted"
but if this grid is drawn at new, "the view" need to know how to draw the grid, which means
at (-10,0,200,100) and not at (0,0,...)

Re: GetWindowRect

Rajesh R Subramanian20-May-08 0:48

Rajesh R Subramanian

20-May-08 0:48

I get it now. I was just wondering why did you go out of your way to draw your grid out of the window area. Rajkumar's answer is pretty straight forward. CPallini's solution should work too. Smile | :)

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: GetWindowRect

CPallini20-May-08 0:02

CPallini

20-May-08 0:02

I think you need:

pGrid->GetWindowRect(&rect);
pView->ScreenToClient(&rect);

But I didn't make a test.
Smile | :)

Re: GetWindowRect

Cedric Moonen20-May-08 0:06

Cedric Moonen

20-May-08 0:06

AFAIK, you have to remove the call to ScreenToClient, otherwise you'll end up with the same resutl as calling GetClientRect.

Cédric Moonen
Software developer

Charting control [v1.4]

Re: GetWindowRect

CPallini20-May-08 0:12

CPallini

20-May-08 0:12

I don't think so, because ScreenToClient is called by the pointer to CView.
On the other hand, pGrid->GetWindowRect will not produce the expected result for sure (of course there is a small probability for a coincidence...).
Smile | :)

Re: GetWindowRect

Cedric Moonen20-May-08 0:56

Cedric Moonen

20-May-08 0:56

Yes that's right, I completely missed the point (next time I'll read the question more slowly)

Cédric Moonen
Software developer

Charting control [v1.4]

Re: GetWindowRect

CPallini20-May-08 1:55

CPallini

20-May-08 1:55

The fast & furious Cédric!
Big Grin | :-D

Re: GetWindowRect

Rajkumar R20-May-08 0:15

Rajkumar R

20-May-08 0:15

Client rectangle is relative to the upper left corner of the window. so the coordinates of the upper-left corner are (0,0).

baerten wrote:
But how i can retrieve where my grid is really positionated on the view?
I want to get the value of (-10,0,200,100), like i used it in the Grid->Create(...);

You may need to map the rectangle from grid to your view window, see [MapWindowPoints^]

Re: GetWindowRect

baerten20-May-08 0:26

baerten

20-May-08 0:26

Big thanks for MapWindowPoints Big Grin | :-D

I will test it Smile | :)

Re: GetWindowRect

Rajkumar R20-May-08 0:30

Rajkumar R

20-May-08 0:30

I think CPallini's solution should also work for your case.

Re: GetWindowRect

Rajesh R Subramanian20-May-08 0:34

Rajesh R Subramanian

20-May-08 0:34

I was just going to suggest that to him.

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: GetWindowRect

Rajkumar R20-May-08 0:38

Rajkumar R

20-May-08 0:38

yes offcourse, but MapWindowPoints is straight forward. instead of WindowA->Screen->WindowB, it is WindowA->WindowB.

Re: GetWindowRect

Rajesh R Subramanian20-May-08 0:47

Rajesh R Subramanian

20-May-08 0:47

Umm... yes, but I wanted to clarify the OP CPallini's answer is right too, as there was a conversation on its correctness between him and Cedric. Smile | :)

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: GetWindowRect

Cedric Moonen20-May-08 0:57

Cedric Moonen

20-May-08 0:57

Rajesh R Subramanian wrote:
as there was a conversation on its correctness between him and Cedric

Turns out he is smarted than me Poke tongue | ;-P

Cédric Moonen
Software developer

Charting control [v1.4]

Re: GetWindowRect

Rajesh R Subramanian20-May-08 1:01

Rajesh R Subramanian

20-May-08 1:01

Both of you are smart without a doubt. Smile | :)

Except for when may be CPallini gets on drugs. Poke tongue | ;-P

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: GetWindowRect

Malli_S20-May-08 0:19

Malli_S

20-May-08 0:19

If I'm not wrong, the client area is the portion of a Windows excluding toolbars, menus, and status bars which always starts with (0,0) coordinates.
And about GetWindowRect, MSDN says "The GetClientRect function retrieves the coordinates of a window's client area. The client coordinates specify the upper-left and lower-right corners of the client area. Because client coordinates are relative to the upper-left corner of a window's client area, the coordinates of the upper-left corner are (0,0)."

-Malli...!

A simple question about Hook

wzcprince19-May-08 23:51

wzcprince

19-May-08 23:51

How can I hook all the messages passed to the Toolbar?
For example,I want to hook the message TB_COMMANDTOINDEX and the message WM_LBUTTONDOWN passed to the Toolbar.But when I use the function SetWindowsHookEx(...),I get a problem!I don't know how to set the first parameter of the function.Do I need to make two different hooks? or can solve the problem in one?

Thanks for your help!

Re: A simple question about Hook

Malli_S20-May-08 0:01

Malli_S

20-May-08 0:01

Why don't you try to hook windows procedure itself ('WH_CALLWNDPROC' as the first parameter) or 'WH_GETMESSAGE'. And can you specify what error do you get?

-Malli...!

Re: A simple question about Hook

wzcprince20-May-08 5:24

wzcprince

20-May-08 5:24

Firstly I'm very glad to receive your reply.
I don't get any exception at all however the application doesn't run as my expect.Actually,I have been trying to do what as you tell me.When the first parameter is 'WH_CALLWNDPROC' I can hook the WM_MOUSEACTIVATE correctlly and when 'WH_GETMESSAGE ' I can hook the WM_LBUTTONDOWN and WM_LBUTTONUP.
My question is that can I get the WH_GETMESSAGE,WM_LBUTTONUP and WM_LBUTTONUP or any other message at the same time in which way I only specify 'XXXX' as the first parameter rather than use two different hooks?

You know that I'm a chinese and my English is poor.So please forgive my stupidity.
Thanks for your help!

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.